2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115680Experimental correlation between the rms nucleus charge radius and the neutron-proton asymmetry is discussed. Simple attempt of explanation of this correlation using a semi-empirical liquid drop model which takes into account nuclear compressibility, nuclear deformation and neutron skin effects is presented. It seems that such procedure could be used as a tool for determination of the nuclear equation of state.10 pages, 4 figures, submitted to PRCNuclear Theorytext